[FEAT] Scrollbar Styles

[MishraTanishq619]

Description

I think we haven't given customised styles to our scrollbar.
We should custom our scrollbar as per our theme.

I want to work on this myself.
Please assign it to me and add tags for hacktoberfest-2024.

[Yashsingh045]

Hi @MishraTanishq619 , I'd like to work on this! Please assign this issue to me.